Cutter-chuck.



M. REISNEH.

CUTTER CHUCK.

APrucmnu mw nume. 1911.

Patented Aug. 6, 1918.

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a @ZZ/ifi ma man' man a, mmm, inumana. n ci MAX enferma, oF coNEY ISLAND, NEW Yonx.

CUTTER- CHUCK.

SpecluationtzLettex-s Patent.

Patented Aug. 6, 1918.

Application iiled August 16, 1917. Serial No. 186,486.

To all whom it may concern.'

Be it known that I, MAX REISNER, a citizen of the United States, and a resident of Coney Island, county of Kings, and State of New York, have invented certain new and useful Improvements in Cutter-Chucks, of which the following is a specification.

My invention is designed more particularly for use in connection with diamond and other cutting stones" employed 1n shaping, dressing, and truing up grind stones, and for similar purposes. Such cutting stones vary in size and are more or less irregular in configuration, and the main object of my invention is to afford ample and positive support for such cutter stones durin use, the invention consisting in the speci e construction and arrangement of parts described and claimed,distinctive features being a plurality of clamping jaws provided with independent tightening screws to compensate for irregularity of shape of the cutter stones, and in the provision of an axial adjustable rest pin for the support of the cutter stone held between said clamping jaws, all as hereinafter more fully set forth.

In the accompanying drawings,

Figure 1, is a front end view of my improved cutter chuck;

Fig. 2, is a side elevation thereof;

Fig. 3, is a section taken upon plane of line 3 3, Fig. 2;

Fig. 4, is a central longitudinal sectional elevation;

Fig. 5, is a front end view of the jaw piece;

Fig. 6, is a side elevation thereof;

Fig. 7, is a rear end view thereof;

Fig. 8, is a side view of the rest pin;

Fig. 9, is an end view thereof;

Fig. 10, is a side view of the back rest screw;

Fig. 11, is an end view thereof.

c, represents a black diamond or other relatively hard stone or cutting medium. As before intimated the natural stones are irregular in size and shape. Hence each of the clamping jaws j, is provided with its own set 0r binding screw b. The plural number of clamping jaws y', are provided, preferably not less than three,four being shown in the drawings as forming a part of the jaw piece J, and corresponding binding screws I), being positioned in the forward` end of the sleeve piece S.

The jaw piece y, is tapped axially, and its rear portion is formed with a female screw thread j', with which the male-threaded back rest i', engages. This back rest v, is nicked at its rear end or otherwise formed to facilitate its being turned in the jaw piece J, to contact with the inner end of the rest pin ,1), and hold the outer end of the latter firmly and positively against the inner end of the cutter stone C.

The inner end of the handle H, is formed with a threaded stud h, which screws into the rear end of the jaw piece as shown in Fig. 4, which also shows the inner end of the sleeve S overlapping the joint between the handle Il, and the jaw piece J.

Obviously the individual bindin b, afford means whereby each jaw y, can be independently adjusted to conform to and contact firmly with the opposed surface of the cutting stone c, thereby compensating for unevenness or irregularity in theV shape of the latter; and the rest pin p, effectually reinforces and sustains the said stone c, axially, so that itI is held rigidly to its work. Furthermore the back rest screw r, provides means for compensating for the wear on the stone c, so that practically the whole of the latter ma be used before it is necessary to discard tie stone and replace it with another, and as such cutting stones are quite expensive the economy thus effected is an important practical advantage.

My device is adapted for drilling, writing and marking; also for making grooves in grinding stones, emery wheels etc., and has genera application in the arts where so called refractory stones are used.

What I claim as my invention and desire to secure by Letters Patent is,

A chuck for cutting stones of the chan acter designated, comprising a tubular jaw piece internally threaded throughout the greater portion of its length and having its outer portion formed into a plurality of jaws adapted to clamp a cuttlng stone, a rest pin in said tubular jaw piece for the support of the cutting stone, a rest screw abutting against the inner und 0f Swirl rust; pin und engaging with the intelnalithread 'in the bu ar "a` cem: e" 0 ma thread in the said tubular jaw piece, a `esleerws overlapping the muimpqrtimno thel Said tubular jaw piece, und radially arranged binding screws in said sleeve, one for each Qf, thq clamping jaws of the Said tubular l0 Jaw piece. for the purpose described.

MMX *REFSNER Witnesses:

, (im WM, mi;

DOROTHY IATT.

Unpiu L thin patent wobtained for ve nenn mh, by addressing the "Oomminionex of istanti, `Wntlflllwn@ EN' 

